CTEK D250SA Dual DC-DC Charger
If you are converting a modern van with a stop/start and/or a regenerative system and you want to charge a leisure battery, you will need a split charge system that can cope with the complexities of the new systems.
These CTEK Battery to Battery chargers solve the problem, whilst also allowing you to connect a sloar panel directly into the charger.
If you want to be able to see the power usage and the available hours left in your leisure battery, see the CTEK D250SA Dual DC-DC 20A "OFF GRID" Charging System which has an additional power monitor.
Includes free UK delivery.
With award winning Swedish technology, the dual input D250SA allows you to enjoy your vehicle more with maximized battery capacity as the ideal charger for vehicles without access to a mains power supply.
The D250SA is a fully automatic, 5 step charger that supplies up to 20A of power to any 12V lead acid service battery from 40-300Ah, including Wet, EFB, MF, Ca/Ca, AGM and Gel. It has selectable charge voltages for AGM batteries and can use power through its dual input from alternator, solar panel and wind power. When the service battery is fully charged, the D250SA will automatically redirect maintenance charge power to the starter battery. The D250SA can maintain a stable output up to 20A to vehicles fitted with smart ECU controlled alternators and also has a temperature sensor for optimised charging, regardless of weather conditions.
Schematic showing D250SA and optional Smartpass 120, for bigger battery setups. If you require this extra power, see the additional Smartpass 120, or the OFF GRID Battery to Battery 140A system, complete with the system monitor
- 20A fully automatic temperature compensated charging for batteries from 40-300Ah while you’re on the move
- Dual input (solar and alternator in parallel)
- Smart alternator compatible
- Battery separation replacing diodes and VSR relays
- Solar panel regulator with Maximum Power Point Tracking (MPPT)
- Selectable AGM option – 14.4V or 14.7V
- Maximised charging for better battery life and performance
- Temperature sensor to compensate for hot or cold conditions
- Splash and dust proof (IP65)
- Compatible with SMARTPASS 120 for the ultimate 140A power management solution
- 2-year warranty
|Input Voltage - Volts:||11.5 / 23|
|Output voltage - Volts:||Max 14.4V (14.7V in AGM mode)|
|Max. charging current - Amps:||20|
|Input from solar panel - V:||11.5v to 23v|
|Conventional alternator cut-in:||>13.1V, for 5 sec. (engine running, alternator charging)|
|Conventional alternator cut-out:||<12.8V, for 10 sec. (engine running, alternator not charging) or service battery voltage > starter battery voltage|
|Smart alternator cut-in V:||>11.8V, for 5 sec. (engine running, alternator charging)|
|Smart alternator cut-out V:||<11.4V, for 10 sec. (engine running, alternator not charging) or service battery voltage > starter battery voltage|
|Battery guard cut-in:||11.5V|
|Battery guard cut-out:||12.0V|
|Temperature protection cut-in:||60 degrees C (140 degrees F)|
|Start assistance activation:||Starter battery 6V|
|Trickle charge starter battery:||Starter battery 11.5V to12.6V.|
|Suitable for battery size - Ah:||40Ah to 300Ah|
|Suitable for battery types:||All 12V lead-acid batteries including: Wet, A.G.M, gel, calcium and maintenance free|
|Max. power input from solar panel - Watts:||300|
|Solar regulator type:||MPPT|
|Cooling method:||Convection cooled|
|Operating temperature range - :||minus 20 degrees C to plus 50 degrees C. Automatic reduction of power at high ambient temperature.|
|Power reduction:||30 degrees C 16A, 50 degrees C 13A|
|Enclosure class:||IP65 (splash and dust proof)|
|Notes:||This charger can only be used with solar panels that have a peak voltage of 23V. Please ensure that your panel is compatible before purchasing.|
|Protections:||Temperature compensated charging, Reverse Polarity protection|
|Certification:||Fully certified for use in vehicles|
|Dimensions (L x W x H) - mm:||192 x 110 x 65mm|
|Nett weight - kg:||1.047|
|Warranty - years:||2|